Dell PowerEdge M520 Dell Converged Enhanced Ethernet Command Reference - Page 202
When an edge port receives a BPDU, it becomes a normal spanning-tree port and is no longer
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11 spanning-tree edgeport spanning-tree edgeport Enables the edge port on an interface to allow the interface to quickly transition to the forwarding state. Synopsis spanning-tree edgeport [bpdu-filter | bpdu-guard] Operands bpdu-filter bpdu-guard Sets the edge port Bridge Protocol Data Unit (BPDU) filter for the port. Guards the port against the reception of BPDUs. Defaults Edge port is disabled. Command Interface configuration mode Modes Description Use this command to enable the edge port feature. This command is only for RSTP and MSTP. Use the spanning-tree portfast command for STP. Usage Guidelines Note the following details about edge ports and their behavior: • A port can become an edge port if no BPDU is received. • A port must become an edge port before it receives a BPDU. • When an edge port receives a BPDU, it becomes a normal spanning-tree port and is no longer an edge port. • Because ports directly connected to end stations cannot create bridging loops in the network, edge ports directly transition to the forwarding state, and skip the listening and learning states Examples To enable a port to quickly transition to the forwarding state: switch(conf-if-te-0/1)#spanning-tree edgeport To set the edgeport BPDU filter for the port: switch(conf-if-te-0/1)#spanning-tree edgeport switch(conf-if-te-0/1)#spanning-tree edgeport bpdu-filter To guard the port against reception of BPDUs: switch(conf-if-te-0/1)#spanning-tree edgeport switch(conf-if-te-0/1)#spanning-tree edgeport bpdu-guard See Also spanning-tree portfast bpdu-guard, spanning-tree autoedge 186 Dell Converged Enhanced Ethernet Command Reference 53-1002115-01